diff options
Diffstat (limited to 'net/netfilter/nf_conntrack_core.c')
| -rw-r--r-- | net/netfilter/nf_conntrack_core.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 85f643c1e227..705198de671d 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -58,8 +58,6 @@ #include "nf_internals.h" -#define NF_CONNTRACK_VERSION "0.5.0" - int (*nfnetlink_parse_nat_setup_hook)(struct nf_conn *ct, enum nf_nat_manip_type manip, const struct nlattr *attr) __read_mostly; @@ -901,6 +899,9 @@ static unsigned int early_drop_list(struct net *net, hlist_nulls_for_each_entry_rcu(h, n, head, hnnode) { tmp = nf_ct_tuplehash_to_ctrack(h); + if (test_bit(IPS_OFFLOAD_BIT, &tmp->status)) + continue; + if (nf_ct_is_expired(tmp)) { nf_ct_gc_expired(tmp); continue; @@ -975,6 +976,18 @@ static bool gc_worker_can_early_drop(const struct nf_conn *ct) return false; } +#define DAY (86400 * HZ) + +/* Set an arbitrary timeout large enough not to ever expire, this save + * us a check for the IPS_OFFLOAD_BIT from the packet path via + * nf_ct_is_expired(). + */ +static void nf_ct_offload_timeout(struct nf_conn *ct) +{ + if (nf_ct_expires(ct) < DAY / 2) + ct->timeout = nfct_time_stamp + DAY; +} + static void gc_worker(struct work_struct *work) { unsigned int min_interval = max(HZ / GC_MAX_BUCKETS_DIV, 1u); @@ -1011,6 +1024,11 @@ static void gc_worker(struct work_struct *work) tmp = nf_ct_tuplehash_to_ctrack(h); scanned++; + if (test_bit(IPS_OFFLOAD_BIT, &tmp->status)) { + nf_ct_offload_timeout(tmp); + continue; + } + if (nf_ct_is_expired(tmp)) { nf_ct_gc_expired(tmp); expired_count++; @@ -1044,7 +1062,7 @@ static void gc_worker(struct work_struct *work) * we will just continue with next hash slot. */ rcu_read_unlock(); - cond_resched_rcu_qs(); + cond_resched(); } while (++buckets < goal); if (gc_work->exiting) @@ -2048,10 +2066,6 @@ int nf_conntrack_init_start(void) if (!nf_conntrack_cachep) goto err_cachep; - printk(KERN_INFO "nf_conntrack version %s (%u buckets, %d max)\n", - NF_CONNTRACK_VERSION, nf_conntrack_htable_size, - nf_conntrack_max); - ret = nf_conntrack_expect_init(); if (ret < 0) goto err_expect; |